CIOS
| Acronym | Definition |
|---|---|
| CIOS | Combined Intelligence Objectives Sub-Committee |
| CIOS | Communication Institute for Online Scholarship |
| CIOS | Computer Information and Office Systems (education) |
| CIOS | Cornwall and the Isles of Scilly (England, UK) |
| CIOS | Claim Imaging Operation Services (insurance) |
| CIOS | Channel Island Occupation Society (Channel Islands) |
| CIOS | Central Imaging Operation Services |